Patch Release: Improved Language Support, Modern UI, Distribution Lists & Other Security Enhancements

Patch Security Severity: Low

Deployment Risk: Medium

This release focuses on improving user experience, enhancing group communication and essential security for the following editions

Patch updated on 28 Feb include the following in their respective releases

What’s New

  • Improved Language Support (Zimbra Daffodil)
    OnlyOffice now provides translations in all supported languages
  • Improved Modern UI speed and performance
    For better user experience
  • Improved Distribution Lists
    Several new functionalities have been added in Modern UI for better group communication

Security Enhancements 

  • Upgraded Nginx for improved security
    To enhance protection against potential threats
  • Reduced security risks for Zimbra Desktop
    Through an upgrade of the Electron framework
  • Implemented multiple security fixes related to XSS (Cross-Site Scripting) attacks 

#ICYMI (In-Case-You-Missed-It)

  • ZCO Email Functionality (Microsoft Updates 2310, 2311)
    An issue was identified in late 2023 with the Zimbra Connector for Outlook (ZCO) software, affecting users who installed Microsoft updates versions 2310 and 2311. Emails sent through ZCO during that period may have appeared blank to recipients. We apologize for any inconvenience this has caused. We have diligently worked to resolve this issue and we’re happy to announce that it has now been fixed. Be sure to upgrade to the latest Outlook version and enjoy seamless email sending through the latest ZCO build. You may find the most recent ZCO package at
  • End of Patch for Zimbra Server on Ubuntu 18.04
    There will no longer be any patch releases for Zimbra Daffodil (v10) on Ubuntu 18.04 operating system. Customers are encouraged to use Ubuntu 20.04 for installations of Zimbra Daffodil (v10) to benefit from future patch releases.

Refer to the release notes for the patch installation on Red Hat and Ubuntu platforms.

An upgrade to the latest patch for your version is highly recommended. Refer to our blog and the Zimbra Security Center for steps to ensure your system is safe.

End of General Support 

Zimbra 8.8.15 has reached the end of General Support.

Support, security patches, or updates for Zimbra 9.0.0 General Support will last through 12/31/2024

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